We will be cruising on the Summit leaving Venice on October 17. This is only our second cruise, and first on Celebrity. Can anyone who has been on a Summit cruise in the Mediterranian tell me how large the typical ship land excursion group is?

I talked to a Celebrity rep who told me the groups average about 15-20 people. This sounds awfully small for a ship with 2000 people. Is this true? We plan on taking private tours in some places and ship tours in others.